A/C Horsepower Drain? - Drive Accord Honda Forums | radio-pro.ru
View Poll Results: Can you feel a loss in power with the A/C on?
V6 - No loss in power 14 26.42%
V6 - I can feel it 8 15.09%
I4 - No loss in power 9 16.98%
I4 - I can feel the pain 22 41.51%
Voters: 53. You may not vote on this poll

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post #1 of 13 Old 09-21-2004, 01:38 PM Thread Starter
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A/C Horsepower Drain?

Originally posted by stiller fan
a/c's rob the 4-banger of about 5-10 horses...at least it feels like it to me anyway...
Originally posted by BenjiBoy650
Much more than 5-10!

These posts from a ways back got me thinking. How much power does the A/C rob?

And as far as the poll goes, can you feel a loss of power?

PRIOR: 1999 Accord EX-L 5M (Rear-ended & totaled)
CURRENT: 2012 Mustang GT 6M
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post #2 of 13 Old 09-21-2004, 01:43 PM Thread Starter
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Re: A/C Horsepower Drain?

I notice it primarily when starting off. There is a big difference starting from a complete stop with the A/C on. It isn't as noticeable in any other gear or at any other rpm.

PRIOR: 1999 Accord EX-L 5M (Rear-ended & totaled)
CURRENT: 2012 Mustang GT 6M

Last edited by Coil99; 06-04-2008 at 07:04 PM. Reason: A/C weather again...
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post #3 of 13 Old 09-21-2004, 03:19 PM
ready to go....

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I put I can feel it, but I want to explain.

The A/C shuts off under a really heavy load....it's supposed to & I know when it does.

I can certainly tell the difference on days that it's not kicking on.....I have a tendency to push the pedal the same & squeal wheels! So I feel when it kicks off more than when it comes on!

So I feel a power gain, not so much a power loss!
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post #4 of 13 Old 09-21-2004, 03:37 PM
pro common sense!

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since i haven't utilized all of my car's power from a stop, it's hard to say if i'm loosing much power, but i do know it's harder to get it in gear from a stop when the ac is on! but on the highway, i don't notice too drastic of a power loss if i turn the ac on.

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post #5 of 13 Old 09-21-2004, 05:58 PM
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i feel a slight loss in power when i turn it on. have to think about it to notice it (4 cyl. auto).
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post #6 of 13 Old 09-21-2004, 06:05 PM

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this is my biggest gripe with this car.... during acceleration, the revs drop significantly faster when shifting than with the a/c off... and I can feel it kick in when cruising on the highway. hopefully soon honda will incorperate clutchless compressors like some other manufacturers.... that would make it basically unnoticable to us..... I've also noticed that when I leave the car sit at the airport for 3 to 5 days, when the a/c compressor first comes on, there is a very loud clunk type sound.. but only after it hasn't run for days... anyone else notice this????????
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post #7 of 13 Old 09-21-2004, 06:28 PM
Out of Control

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I notice the noise quite a lot, especially when I turn it on when the car is cold (high RPM clutch engagement). Doesn't bother me, AC still works good. The problem is that it revs significantly slower with the AC on. To drive at normal pace with the AC on around the city, I end up using 40-50% more throttle, and sometimes that means the pedal is on the floor
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post #8 of 13 Old 09-21-2004, 06:28 PM
ready to go....

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Mine has sat for 2 weeks & not made any abnormal sounds when using it the first time. Yes, I do hear the compressor though.
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post #9 of 13 Old 09-22-2004, 09:05 AM

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i notice the a/c compressor kick on the most when i'm trying to accelerate. i notice it when i'm stopped, or at 70+ mph...i always feel it kick on...
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post #10 of 13 Old 03-21-2013, 10:17 PM
Four Doors/Three Pedals

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I'm not sure about the new car yet, but in previous experience, the loss of power is noticeable and if I need to get from a stoplight, I'll turn off the AC before hand.

AC compressors drain power, whether or not it's perceptible.

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post #11 of 13 Old 03-22-2013, 06:56 AM
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Although I no longer own an Accord I checked 4 cyl - feel the pain. My '04 2.4l 5 speed really fell on its face with the A/C on which was 99% of the time in TX. My 3.5l RAV4 uses a different type of compressor and I literally can't tell if it's on or off other the cold air blowing.
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post #12 of 13 Old 03-15-2014, 09:30 PM
4th Gear

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anyone ever experienced an AC/PS delete? so much raw power
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post #13 of 13 Old 03-17-2014, 01:36 AM
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Before I cleaned the throttle body, the loss in power with A/C on was significant and the idle RPMs were struggling to keep up. Ever since I cleaned the throttle body, the loss in power is barely noticeable and the RPMs are fantastic. So, voted for loss in power - however small it may be.

I also think, A/C power drain is a common problem in 2003 Accords I4 and V6.

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